大型地埋管群地源热泵三维传热-渗流耦合模拟

王洋; 张丰收; 鲁克文; 孙婉

doi:10.19912/j.0254-0096.tynxb.2022-1859

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (4) : 302-310. DOI: 10.19912/j.0254-0096.tynxb.2022-1859

大型地埋管群地源热泵三维传热-渗流耦合模拟

王洋^1~4, 张丰收^1,2, 鲁克文^3,4, 孙婉^3,4

作者信息 +

THREE-DIMENSIONAL HEAT TRANSFER-SEEPAGE COUPLING SIMULATION OF LARGE-SCALE BURIED PIPE CLUSTER GROUND SOURCE HEAT PUMP SYSTEM

Wang Yang^1~4, Zhang Fengshou^1,2, Lu Kewen^3,4, Sun Wan^3,4

Author information +

文章历史 +

摘要

为确定地下水渗流对大尺度、多分支埋管集群地源热泵系统换热区温度场和换热特性的影响,基于上海天文馆880个地埋管地源热泵场地,建立考虑地下水渗流和地质分层的三维传热-渗流耦合模型,并利用现场热响应试验对模型进行验证。结果表明：渗流作用引起管群内和支管群之间沿地下水流动方向发生温度干扰,89.5~120.3 m埋深范围内的温度干扰现象相对明显;地下水渗流有利于提高管群的换热总量,缩小夏季和冬季工况的换热量差距;换热量增加百分比随水力梯度的增加而增大,两者呈对数函数关系,当水力梯度大于0.005时,换热量增加百分比趋于平稳。

Abstract

To determine the influence of groundwater flow on the temperature field and heat transfer characteristics of the large-scale, multi-branch pipe cluster ground source heat pump system, a three-dimensional heat transfer-seepage coupling model considering groundwater flow and geological stratification is established based on the 880 buried pipes site of Shanghai Astronomy Museum. The model is verified through thermal response tests. The results show that groundwater flow causes temperature interference along the groundwater flow direction within the pipe clusters and between branch clusters, and the temperature interference phenomenon is relatively pronounced in the depth of 89.5-120.3 m. Groundwater flow promotes the total heat transfer of the pipe cluster and reduces the heat transfer difference between summer and winter operating conditions. The percentage increase in heat transfer is proportional to the hydraulic gradient and follows a logarithmic function. When the hydraulic gradient is greater than 0.005, the percentage increase in heat transfer tends to stabilize.

导出引用

王洋, 张丰收, 鲁克文, 孙婉. 大型地埋管群地源热泵三维传热-渗流耦合模拟[J]. 太阳能学报. 2024, 45(4): 302-310 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1859

Wang Yang, Zhang Fengshou, Lu Kewen, Sun Wan. THREE-DIMENSIONAL HEAT TRANSFER-SEEPAGE COUPLING SIMULATION OF LARGE-SCALE BURIED PIPE CLUSTER GROUND SOURCE HEAT PUMP SYSTEM[J]. Acta Energiae Solaris Sinica. 2024, 45(4): 302-310 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1859

中图分类号： TK521

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